公开(公告)号：US20240229303A1

公开(公告)日：2024-07-11

申请号：US18292610

申请日：2022-07-22

Applicant: Lenzing Aktiengesellschaft

Inventor： Thomas RÖDER ,  Friedrich SUCHOMEL ,  Christian MAYRHOFER-HUBER ,  Markus DUSCHLBAUER

IPC: D01F2/02 ,  D01D5/06 ,  D01D5/26 ,  D01D10/06 ,  D01F11/02 ,  D04H1/067 ,  D04H1/28

CPC classification number: D01F2/02 ,  D01D5/06 ,  D01D5/26 ,  D01D10/06 ,  D01F11/02 ,  D04H1/067 ,  D04H1/28 ,  D10B2201/22

Abstract: A method and a production facility for producing regenerated cellulosic fibers. A spinning solution is extruded into a coagulation bath which contains a salt and preferably an alkali. The spinning solution comprises cellulose dissolved in an aqueous solvent comprising NaOH and ZnO and the coagulation bath has a pH-value of at least seven. The processing facility comprises a cutter to cut the fiber tow in an undried state into cut fibers, a fleece-forming device for suspending the cut fibers and collecting them in form of a non-woven fiber layer, and at least on pressing device for pressing the non-woven fiber layer, thereby imposing a natural crimp on the fibers.